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Abstract #2570

Time-Dependent Diffusion MRI for Quantitative Microstructural Mapping of Intestinal Fibrosis in Patient with Crohn’s disease

Xin-yue Wang1, Li Huang1, Chen ZHAO2, Mengzhu Wang2, MeiNing Chen2, Shi-ting Feng1, and Xue-hua Li1
1The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China, 2MR Research Collaboration, Siemens Healthineers, Beijing, China

Synopsis

Keywords: DWI/DTI/DKI, Microstructure

Motivation: Microstructural characteristics of intestinal fibrosis is a crucial determinant impacting the selection of therapeutic strategies and prognosis of patients with Crohn’s disease (CD).

Goal(s): To evaluate the feasibility and efficacy of time-dependent diffusion MRI (TD-dMRI) based microstructural mapping for noninvasive characterization of intestinal fibrosis in intestinal strictures in CD.

Approach: TD-dMRI was performed in consecutive CD patients scheduled for surgery. TD-dMRI-based microstructural parameters acquired were compared with conventional apparent diffusion coefficient (ADC) and verified by histopathogical measures.

Results: Multiparametric TD-dMRI-based microstructural mapping correlates with pathological findings and demonstrates promise for characterizing intestinal fibrosis in CD.

Impact: Time-dependent diffusion MRI-based microstructural mapping demonstrates promise for noninvasively characterizing intestinal fibrosis of CD, with high accuracy against histopathologic standard, thus guiding treatment and predicting clinical outcome.

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Keywords